Archive for category Green Building

Are Tankless Waterheaters Really Green? Part 3

There have been a lot of marketing dollars spent promoting the advantages of tankless water heaters, but little attention given to the issues that could reduce those advantages.  In the last couple of posts in this series, we examined a number of important issues any homeowner needs to weigh before deciding to replace their existing [...]

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Are Tankless Waterheaters Really Green? Part 2

In the last post we examined tha actual efficiencies of tankless waterheaters apart from the industry claims. We discussed the high upfront cost against the actual savings in dollars.  A couple of other issues to keep in mind if considering going tankless: “Cold Water Sandwich” Imagine a common situation we have all experienced.  You turn [...]

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Are Tankless Waterheaters Really Green?

Tankless or on-demand waterheaters have been enjoying a rising popularity for a number of years now.   During my years of custom homebuilding they were considered a must have feature for a number of reasons.  They are purported to save energy over a standard storage type waterheater because you aren’t paying for the standbuy losses of heating a tank [...]

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Title 24 and Ventilation – Controls and Operation

In an earlier post we calculated the minimum whole building ventilation requirements for a 2000 sf home under the 2008 Title 24.  What are our options for controlling the ventilation system? It depends on the type of ventilation system we have selected.  If it as simple as using a bathroom exhaust fan as our continuous [...]

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Calculating Home Ventilation Requirements

In the last post we discussed the benefits of creating a tight, energy efficient structure whether in new construction or as part of a remodel or energy retrofit.  I want to stress again that regardless of the comfort and energy saving benefits of good air sealing practices, if we don’t provide adequate ventilation the health risks [...]

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Building Performance FAQs – # 2 Can A Building Be Made Too Tight?

Simply put, yes it can.  Traditionally, wood framed structures supplied needed ventilation and moisture control by infiltration through the building’s shell.  This worked well except there was a trade off: excessive heat loss and cold drafts.  Even with the addition of insulation, excessive air infiltration across fiberglass batts renders them ineffective at preventing heat loss.  Fast forward a few years.  In [...]

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Building Permits in the Sacramento Area On the Rise

The Sacramento Business Journal is reporting today that single family building permits are up by 41% in the month of January compared to the same month last year.  211 permits were pulled last month versus 150 in January 2009.  This is also an increase of 23% over the 172 permits pulled in the previous month December [...]

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EPA’s Water Sense Program for Single Family Homes

The EPA has many programs to encourage the reduction of energy use through education and rebates such as Energy Star.  Now after a three year development and public comment period they have released their new Water Sense for Single Family Homes specifications. Like the Energy Star for homes program, participation is voluntary.   Certification requires the use [...]

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Virtual Energy Forum

The Virtual Energy Forum  is a free conference that brings together stakeholders in the energy industry with potential customers, policy makers, and investors. The event, which meets twice a year and features live video presentations, real-time Q & A and a virtual exhibit floor, answers the need to better understand how to implement renewable and cost-saving [...]

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Dual Flush Toilet Retrofit Kit

Thinking of replacing an existing toilet to reduce your water use, but hesitating because of the expense? Here’s an option you might consider. Brondell has introduced…

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Building Performance FAQs #1: What is Building Performance?

According to the Building Performance Institute, building performance is a systematic approach to improving the comfort, health, safety, energy efficiency and durability of our customers homes and places of work. Comfort is improved by treating the building as a system of processes…

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Multi-family Green Retrofit Scope of Work

As promised at the end of my last post, a little info on the project. The building is two-story wood framed construction, originally built in the late seventies.    As I mentioned, it is an 100% occupied HUD subsidized facility complete with a large dining room, two commercial kitchens and numerous common areas for recreational activities including [...]

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